NORMAL GROWTH OF DOMESTIC ANIMALS

UNIVERSITY OF MISSOURI COLLEGE OF AGRICULTURE AGRICULTURAL EXPERIMENT STATION RESEARCH BULLETIN 62 NORMAL GROWTH OF DOMESTIC ANIMALS (Pllblication ...
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UNIVERSITY OF MISSOURI

COLLEGE OF AGRICULTURE

AGRICULTURAL EXPERIMENT STATION RESEARCH BULLETIN 62

NORMAL GROWTH OF DOMESTIC ANIMALS (Pllblication

:l.uthorizcd June 30, HI22.)

COLUMBIA. MISSOURI NOVEMBER, 1923

UNIVERSITY OF M ISSOURI COLLEGE OF AGRICULTURE

Agricultural Experiment Station nOI\JtlJ 01·' CON'rHO!.

PREFACE

THE CURATORS OF THE UNIVERSITY OF MISSOURI EXECUTIVE BOAIW OF THE UNIVERSITY P. E. UURTON, . lltin Jo

E. [.ANSING RAY,

St. LOlli,

H.

].

Paria

AnVIS{H,tY COUNCil.

F. B.

1.. 1•.

D., PRESIDENT OF THE UNIVE;RSITY

Novcmller,

AGRICULTUHAL

Clifi;MISTRY

A. G. HO GA N , Ph. D. L. D. HAIGII, Ph. D.

RITCUU:, A. 11'1. E. E, VANATTA, M. S. A. R. 1-1,01.1., n. �. in Agr. fl. !'II. l-h�SIlAIV. M. S. }. 1�. BUNTf.I!. JOliN L. NlIl ••"Hf, A. I'll. W.

S.

AGIUCULTunAL

ENGINEEIUNG

}. C. WOOI,f.\', 13. S. �fAc" M. JONf.S. Il. S. W. C. HOI/H\', H. S. in Agr.

ANIMAL HUSBANDRY

E. L. A. II. D. M.

A. TIlOWIlR10Gf., Il. S. in Al:"r. A. WI!AVJ';II, D. S. in Agr. G. 1'loGAIl, Ph. D. 11. M UIot�OIlD , M. S. W. C I lITHllll(tl" , D. S. in Agr. T. POSTEll, n. S.

BOTANY W. J. ROUBIIlS, Ph. D. 1. 1'. SCOTT, B. S. in Agr. DAJI(V HUSBANDRY A. C. UAGSUAl.lt, U. S. in Agr. WM. H. E. flY.lIl, A. M. SAI.IU�I. O�OUY, M. A. C. W. 'J'VIlllt;R, A. M . D. H. NfI..SOIl, A. AI. W. P. I'[AYS, n. S. in Agr. J. D. Ni!LSOIl, A. M.

ENTOMOLOGY

L EON .....D H...sUUN, Ph. D. K. C. SUI.l.IVAN, A. M. O. R. MCOIlIlli!, D. S. in Agr. NIlI!!.Y 'l'uII II1;11;, B. S. in Agr. FIELD CROPS W. C. ETIlEII;IDGIt, Ph. D. C. A. I-IF.l. lot, A. M. L. J. STIIIlI.I!II, Ph. D. O. W. LI!TS OII. A. M. MISS R IlGINIl SCIIUl..Ti!, A. D.-

lise

This is illustrated by

engineering,

of

chemical and biological handbooks.

MUMFORD, M. S., DIRECTOR S'I'A'l'ION

wide-spread

the

01i'F1CEUS 010' 'l'IlE STATION C. JONES, PH. D.,

useful time-saving devices to those who have occasion to make use of numerical data.

'I'lIE MISSOUIU STATE DO,\RD OF AGIUCUl/fUnE

J.

Conveniently arranged tables are among the most

DLANTON,

for

ing

the

compilation

of

mathematical,

The time is arriv­

handbooks

of

agricultural

data.

STAFF

This bulletin is a first cooperative attempt to put

1923

into convenient form scattered data on growth of farm

IWRAL LIFE

O. R. )0111-15011, A. 111. S. D. GIIOAIY.II, A. M. E. r�. !...IOIIGAll, A. M. D. II. FIIAWt, IJ. S. in Agr. D. R. COW,HI. I'h. D. W. L. WITTy', A. M.

J. TIILD�IlT, A. M. H. G. SWIlIlTWOUT, D. S. in Agr. H. D. HOOKI!R, }II .. Ph. D. T.

A.

M.

IIUSDANDlty

H. L. K�MPSTI!K, B. S. E. W. HUO)HIISOtl, 11. S.

in

Agr.

son,S

M. F. MII..L(II, M. S. A.t H. H. KIIUSU:O�f, A. M. W. A. ALDIIECIIT. Ph. D. F. L. Dul..l':\·, A. M. WI.!. DE\:OUNG, B. S. in Agr. H. V. J0111..... N, U. S. in .-\gr. RICII AIID llIlADfIHI.U, Pli. D. 1';. n. POWI!I.I.. B. S. ill Agr. R. J.o;. VIlLANIl, Jl. S. in Ail"\". VE;TEIUNARV

SCIENCE

J. W. CONII... W... Y, D. V. S., M. D.

L. s. B"'CKU�, D. V. M. O. S. CIlISI..r.:K. D. V. M. A. J. DUIIANT, A. M. H. G. NEWI.IIIN, A. M.

OTUE;R OFFICERS R. B. Pille!!, M. S., Treasurer LESLIE COW... Il, B. S., Seerctary SliM D. SlIIRKIlV. A. M., AS5t. to Direetor A. A. JI!�FII�Y, A. D., ,\gricu[lural J.o;dilOr J. F. n... MIlIII.!, Photographer MISS J... Nf FKOIlSILHt, Librarian E. E. UWOWN, Ullsinc5s Manager

'In the service of U. S. Departmcnt of l\gricultllre. tOn \eaye of allsence.

These curves and tables will be useful to the growers of mals, as norms, or standards of grO\-vth.

They may al­

so be of interest to the general student of growth. A word concerning the persons who inspired the

A. M. llUIlIIOUGIlS, ,\. 111.

POULTI�Y

]n addition to the numerical data, curves are

presented to show the process of growth as a whole. animals and to investigators in nutrition of farm ani­

UOWI'ICULTURF.

). T. QUWII,

animals.

acculllulation of data on growth

in this Station:

The

former director of this station, I-I. J. Waters, and the present director, F. B. Mumford have taken much in­ terest in, and macle important contributions to, the sub­ ject of growth. tion is due in two men.

a

The accumulation of data in this Sta­ large measure to the stimulus of these

The undersigned were appointed by Dire.­

tor Mumford as a committee to alTange the availal)le data on growth for publication in this bulletin, and make additions to this compilation from time to time. C. R. :tvloulton H.

L.

Kempster

A. C. I-logan Samuel Brody.

to

Normal Growth of Domestic Animals I N TRODUCTION



F. B. MUt.1FORD

The physiological phenomenon of growth in the domestic ani­

CONTENTS

mals is undoubtedly the most important single factor, not only in research but in the development of animals for economic and commercial purposes. Page 3

Preface

5

lntrodllclion

is important to determine i f possible

standards of gruwth which may be lISCU by investigators.

Be­

cause of a lack of slIch standards, it is now difTicult to coordinate the

results of

difTerent

investiga,tors.

Investigators are handi­

capped in growth studies of the domestic animals because there are no satisfactory standards of normal growth available.

Data on Growth:

1.

It

what is normal growth in the domestic animals and to establish

G

Cattle a.

Beef

b.

Dairy

2.

Horses

3.

Sheep

4.

Swine

G.

Poullry

Cattle Cattle

The Equ i valence of Age

6 18 26 28 36

40 111

Domestic Animals

53

The Missouri Experiment' Station has during a number of years conuucted growth experimenls in several deparlments and has assembled from other sources valuable data

011

the subject.

This

publication hy various authors interested in growth studies is a rlrst attempt on the part of growth standards.

these workers

to establish normal

It is hoped that the publication of these re­

sults will suggest similar contr ibutions by olhers, and that in the end we may have comparatively definite standard growth curves which will give greater definiteness to growth studies.

The tables

and charts submilled in this publication w i l i be revised from time to time as further data acculllulate.

6

MISSOURI AGR. Exp. STA. RESEARCH BULLETIN 62

GROWT!-I CURVES FOR BEEF STEERS

only comment we have to offer is that possibly the method of feeding may have obscured any tendency to cyclic growth.

A. G. HOGAN, If. D. Fox The

data

from

which

the

'1'. L.

kindly sent us by Prof.

lirst

chart

was

drawn,

were

f

t 'I'All!.I� l.-AVE�AGE WET�HTS 011

Haecker, and are presented as un­

mcnt Station.

Age in months (28 days)

The method of feeding these steers has been described in Bul­ letin 193 of the Minnesota Station, and will not be repeated here. Our interpretation of their statement, however, is that these steers were not fed to grow at the maximu111 rate, but were fed to grow as rapidly as practicable under ordinary conditions.

ill ' ! Chan }

,'j-



-7

.

Chart 2

07

..

,. ..

.-

,.

If: !Z'

--

"

..

CJ

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